CN209120157U - A kind of infrared ray pressure switch - Google Patents
A kind of infrared ray pressure switch Download PDFInfo
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- CN209120157U CN209120157U CN201822166504.7U CN201822166504U CN209120157U CN 209120157 U CN209120157 U CN 209120157U CN 201822166504 U CN201822166504 U CN 201822166504U CN 209120157 U CN209120157 U CN 209120157U
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- hole
- push rod
- pressure
- cavity
- infrared ray
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Abstract
The utility model belongs to pressure switch technical field, refer in particular to a kind of infrared ray pressure switch, it include switch case, cavity is provided in switch case, push rod is provided in cavity, the upper end of push rod passes through the upper surface elastic connection of reset spring and cavity, the lower end of cavity is provided with pressure through-hole, ray through-hole is provided on push rod, RF transmitter and infrared receiver are provided in cavity, RF transmitter and infrared receiver are by ray through-hole mutually to penetrating, RF transmitter, infrared receiver is electrically connected with control unit, control unit is arranged in switch case.The utility model push rod is directly contacted with extraneous high-pressure medium, by the sliding position of RF transmitter and infrared receiver detection push rod under the effect of extraneous high-pressure medium, and then form pressure switch signal, compared to the mechanical trigger switch of conventional pressure switch, high sensitivity, stable and long service life.
Description
Technical field:
The utility model belongs to pressure switch technical field, refers in particular to a kind of infrared ray pressure switch.
Background technique:
High-pressure pump is a kind of machinery for making liquid pressurization and conveying liquid.It will be outside the mechanical energy of power source or other
Energy sends liquid to, increases liquid energy, is mainly used to convey liquid, gas-liquid mixture and the liquid containing suspended solids
Body.And in order to avoid under no load high-pressure pump liquid is persistently pressurized, lead to that fluid pressure is excessively high, high-pressure pump damage, one
As can equipped with the pressure switch that starts or stops of control high-pressure pump, i.e., pressure switch by fluid pressure realize automatically to high pressure
The control of pump.
Conventional pressure switch generally comprised pedestal, housing, be arranged in pedestal and housing cladding inner cavity in contact and
Switch base, switch base is interior to be arranged microswitch, mobile towards switch base by liquid-driving contact, and then contact connects with microswitch
Touch trigger action.However, contact and microswitch make there is mechanical life since microswitch belongs to mechanical switch
After a period of time, contact and microswitch are easy to appear fatigue, cause the switch motion of microswitch to respond slow, even
Failure, reliability is lower, be easy to cause that fluid pressure is excessively high, high-pressure pump damage.
Summary of the invention:
The purpose of the utility model is to provide a kind of high sensitivity, stable and infrared line pressures with long service life to open
It closes.
The utility model is realized in this way:
A kind of infrared ray pressure switch, includes switch case, and cavity, setting in cavity are provided in the switch case
There is the push rod that can be slided along the axial reciprocating of cavity, the upper end of push rod is connected by the upper end surface elastic of reset spring and cavity
It connects, the lower end of cavity is provided with the pressure through-hole being connected with the external world, is provided with ray through-hole on push rod, is provided in cavity red
Outside line transmitter and infrared receiver, RF transmitter and infrared receiver by ray through-hole mutually to penetrating, it is infrared
Line transmitter, infrared receiver are electrically connected with control unit, and control unit is arranged in switch case, and push rod is by the external world
High-pressure medium is pushed along the sliding axially of cavity by pressure through-hole, is red according to infrared receiver reception by control unit
The signal of outside line forms pressure switch signal.
In a kind of above-mentioned infrared ray pressure switch, the switch case includes main body and the tune for being screwed onto main body upper end
Pressure nut, the pedestal for being screwed onto lower body, offer through-hole one along its axial direction in main body, are axially arranged in pedestal along it
There are through-hole two and pressure through-hole, through-hole one and through-hole two form the cavity, and the upper surface of the cavity is pressure regulation nut
Inner face.
In a kind of above-mentioned infrared ray pressure switch, the lateral surface of the lower end of the push rod and the wall surface of the hole of through-hole two
It is tightly connected by sealing ring.
In a kind of above-mentioned infrared ray pressure switch, annular groove is provided on the lower end of the push rod, sealing ring is set
It sets in a ring groove.
In a kind of above-mentioned infrared ray pressure switch, the aperture of the pressure through-hole is less than the aperture of through-hole two, pressure
Positioning step is formed between through-hole and through-hole two.
In a kind of above-mentioned infrared ray pressure switch, the limit dress that restricted push rod circumferentially rotates is set on the push rod
It sets.
In a kind of above-mentioned infrared ray pressure switch, the limiting device is the cross section of the upper end of push rod in polygon
Shape or ellipsoidal structure, through-hole one are polygonal hole compatible with the upper-end structure of push rod or slotted eye；
Or the limiting device is the more than one limit raised line being arranged on push rod lateral wall, limits raised line along push rod
Axial setting, is provided with limiting slot in main body, and the limit raised line is arranged in limiting slot and can be along limiting slot up and down reciprocatingly
It is mobile.
In a kind of above-mentioned infrared ray pressure switch, positioning column one is provided on the upper end end face of the push rod, it is described
Positioning column two corresponding with one position of positioning column is provided on the inner face of pressure regulation nut, the both ends of reset spring are arranged respectively
On positioning column one and positioning column two.
In a kind of above-mentioned infrared ray pressure switch, the installation being connected to cavity is provided on the side wall of the main body
Slot, the U-shaped seat of opening inwardly is inserted in mounting groove, and the RF transmitter device and infrared receiver are separately positioned on U
On two inner sidewalls of shape seat, setting is fluted at the notch of mounting groove, and described control unit is arranged in groove.
In a kind of above-mentioned infrared ray pressure switch, positioning baffle is provided in the mounting groove, positioning baffle is located at U
Between the two sidewalls of shape seat, and the lateral surface of positioning baffle and the inner wall of U-shaped seat are inconsistent.
The advantage that the utility model protrudes compared with prior art is:
1, the utility model push rod is directly contacted with extraneous high-pressure medium, is examined by RF transmitter and infrared receiver
Sliding position of the push rod under the effect of extraneous high-pressure medium is surveyed, and then forms pressure switch signal, compared to conventional pressure switch
Mechanical trigger switch, high sensitivity, stable and long service life；
2, the utility model switch main body and pressure regulation nut, pedestal are split type structure, and dismounting convenience is adjusted by the thread
The connection amount of pressure regulation nut and main body, so that the compression elasticity of reset spring becomes larger or becomes smaller, and then to the pressure of the utility model
Force threshold is adjusted, the high-pressure pump or other liquid supercharging equipments under different operating conditions.
Detailed description of the invention:
Fig. 1 is the overall perspective view of the utility model；
Fig. 2 is the entirety sectional view one of the utility model；
Fig. 3 is the entirety sectional view two of the utility model；
Fig. 4 is the whole explosive view of the utility model；
Fig. 5 is the push rod schematic diagram of the utility model；
Fig. 6 is the partial enlarged view A of Fig. 5；
Fig. 7 is the pedestal cross-sectional view of the utility model.
In figure: 1, push rod；2, reset spring；3, pressure through-hole；4, ray through-hole；5, RF transmitter；6, infrared ray
Receiver；7, control unit；8, main body；9, pressure regulation nut；10, pedestal；11, through-hole one；12, through-hole two；13, sealing ring；14,
Upper end；15, lower end；16, positioning column one；17, positioning column two；18, mounting groove；19, U-shaped seat；20, groove；21, positioning gear
Plate.
Specific embodiment:
The utility model is further described with specific embodiment below, referring to Fig. 1-:
A kind of infrared ray pressure switch, includes switch case, and cavity, setting in cavity are provided in the switch case
There is the push rod 1 that can be slided along the axial reciprocating of cavity, the upper end 14 of push rod 1 passes through the upper surface bullet of reset spring 2 and cavity
Property connection, the lower end of cavity be provided with the extraneous pressure through-hole 3 being connected, ray through-hole 4 is provided on push rod 1, in cavity
It is provided with RF transmitter 5 and infrared receiver 6, RF transmitter 5 and infrared receiver 6 pass through ray through-hole 4
Mutually to penetrating, RF transmitter 5, infrared receiver 6 are electrically connected with control unit 7, and the setting of control unit 7 is switching
On shell, push rod 1 pushes sliding axially, by control unit 7 along cavity by pressure through-hole 3 by extraneous high-pressure medium
Pressure switch signal is formed according to the signal of 6 receiving infrared-ray of infrared receiver.Its extraneous high-pressure medium can be liquid, gas
Or gas-liquid mixture.The utility model push rod 1 is directly contacted with extraneous high-pressure medium, by RF transmitter 5 and infrared ray
Receiver 6 detects sliding position of the push rod 1 under the effect of extraneous high-pressure medium, and then forms pressure switch signal, compared to tradition
The mechanical trigger switch of pressure switch, high sensitivity, stable and long service life.
And in the present embodiment, in order to make the utility model dismounting convenience, the switch case includes main body 8 and is screwed onto
The pressure regulation nut 9 of 8 upper end of main body, the pedestal 10 for being screwed onto 8 lower end of main body, offer through-hole 1 along its axial direction in main body 8,
Its axial direction is provided with through-hole 2 12 and pressure through-hole 3 in pedestal 10, through-hole 1 and through-hole 2 12 form the cavity, institute
The upper surface for stating cavity is the inner face of pressure regulation nut 9.Its main body 8 and pressure regulation nut 9, pedestal 10 are split type structure, bottom
Seat 10 with the fluid passage of high-pressure pump or other liquid supercharging equipments for connecting, and pressure regulation nut 9 is for adjusting reset spring 2
Decrement is adjusted by the thread the connection amount of pressure regulation nut 9 Yu main body 8, so that the compression elasticity of reset spring 2 becomes larger or becomes
It is small, and then the pressure threshold of the utility model is adjusted, increased with the high-pressure pump being suitable under different operating conditions or other liquid
It presses in equipment.
In order to enable the lower end 15 of push rod 1 to be sealed pressure through-hole 3, prevent extraneous high-pressure medium from entering sky
Chamber impacts the sensitive accuracy of the utility model, the lateral surface of the lower end 15 of the push rod 1 and the hole of through-hole 2 12
Wall surface is tightly connected by sealing ring 13.
Further, in order to improve the mounting stability between push rod 1 and sealing ring 13, on the lower end 15 of the push rod 1
It is provided with annular groove, sealing ring 13 is arranged in a ring groove.
Meanwhile when pushing push rod 1 to act on without extraneous high-pressure medium, in order to avoid push rod 1 is in the compression bullet of reset spring 2
It is detached from cavity from pressure through-hole 3 under power effect, the axial position of push rod 1 is limited, the aperture of the pressure through-hole 3 is small
Positioning step is formed between the aperture of through-hole 2 12, pressure through-hole 3 and through-hole 2 12, the lower end surface of push rod 1 can be with positioning
Step is inconsistent.
In order to ensure the axis of ray through-hole 4 is parallel with the infrared ray that RF transmitter 5 is emitted and can be overlapped, resistance
Throw-out lever 1 is relatively rotated in switch through-hole, and the limiting device that restricted push rod 1 circumferentially rotates is arranged on the push rod 1.
A kind of set-up mode of limiting device: the limiting device is that the cross section of the upper end 14 of push rod 1 is in polygon
Or ellipsoidal structure, through-hole 1 are polygonal hole compatible with 14 structure of upper end of push rod 1 or slotted eye；This implementation
Example limiting device uses the set-up mode, and the cross section of the upper end 14 of push rod 1 is square structure, and through-hole 1 is rectangular
Hole.
Another set-up mode of limiting device: the limiting device is more than one being arranged on 1 lateral wall of push rod
Limit raised line, limit raised line is provided with limiting slot along the axial setting of push rod 1 in main body 8, and the limit raised line, which is arranged, to be limited
It can move back and forth up and down in the slot of position and along limiting slot.
The working principle of the present embodiment: when the pressure of extraneous high-pressure medium is less than or equal to rated pressure threshold value, push rod 1 exists
Reset spring 2 and fixed under the action of positioning step, the infrared ray that RF transmitter 5 is emitted and penetrating on push rod 1
The axis of line three-way hole 4 coincides, i.e., infrared receiver 6 can receive infrared ray, and then form on or off by control unit 7
Switching signal；When the pressure of extraneous high-pressure medium is greater than rated pressure threshold value, under the pressure effect of extraneous high-pressure medium
Push rod 1 slides axially along cavity, and the infrared ray that ray through-hole 4 is emitted with RF transmitter 5 is staggered, i.e., infrared ray connects
Infrared ray can not be received by receiving device 6, and the switching signal of off and on is formed by control unit 7.
Wherein, since ray through-hole 4 has certain pore size, thus the infrared ray that RF transmitter 5 is emitted
There is the switching range for partially overlapping and being completely coincident between ray through-hole 4, in the present embodiment, control unit 7 can root
The magnitude of current for controlling high-pressure pump or other liquid supercharging equipments according to infrared ray thickness amount received by infrared receiver 6 is big
It is small.
Further, for the ease of the assembly of reset spring 2, the operation stability of the utility model is improved, the push rod 1
It is provided with positioning column 1 on the end face of upper end, is provided on the inner face of the pressure regulation nut 9 opposite with one 16 position of positioning column
The positioning column 2 17 answered, the both ends of reset spring 2 are respectively sleeved on positioning column 1 and positioning column 2 17.
The specific set-up mode of RF transmitter 5, infrared receiver 6 and control unit 7: the side of the main body 8
It is provided with the mounting groove 18 being connected to cavity on wall, the U-shaped seat 19 of opening inwardly, the infrared ray hair are inserted in mounting groove 18
5 device of emitter and infrared receiver 6 are separately positioned on two inner sidewalls of U-shaped seat 19, and push rod 1 is located at the two sides of U-shaped seat 19
Between wall, fluted 20 are arranged at the notch of mounting groove 18, described control unit 7 is arranged in groove 20.
Installation is plugged for the ease of U-shaped seat 19, and ensures that the axis of ray through-hole 4 is sent out with RF transmitter 5
The infrared ray penetrated is parallel and can be overlapped, and positioning baffle 21 is provided in the mounting groove 18, and positioning baffle 21 is located at U-shaped seat 19
Two sidewalls between, and the lateral surface of positioning baffle 21 and the inner wall of U-shaped seat 19 are inconsistent.
Above-described embodiment is only one of preferred embodiment of the utility model, and the implementation of the utility model is not limited with this
Range, therefore: the equivalence changes that all shape, structure, principles according to the utility model are done should all be covered by the guarantor of the utility model
Within the scope of shield.
Claims (10)
1. a kind of infrared ray pressure switch, it is characterised in that: include switch case, is provided with cavity in the switch case,
The push rod (1) that can be slided along the axial reciprocating of cavity is provided in cavity, the upper end (14) of push rod (1) passes through reset spring
(2) with the upper surface elastic connection of cavity, the lower end of cavity be provided with the extraneous pressure through-hole (3) being connected, on push rod (1)
It is provided with ray through-hole (4), RF transmitter (5) and infrared receiver (6), RF transmitter is provided in cavity
(5) pass through ray through-hole (4) with infrared receiver (6) mutually to penetrating, RF transmitter (5), infrared receiver (6) are equal
It is electrically connected with control unit (7), control unit (7) is arranged in switch case, and push rod (1) passes through pressure by extraneous high-pressure medium
Power through-hole (3) pushes sliding axially and then by control unit (7) according to infrared receiver (6) receiving infrared-ray along cavity
Signal formed pressure switch signal.
2. a kind of infrared ray pressure switch according to claim 1, it is characterised in that: the switch case includes main body
(8) and the pedestal (10) that is screwed onto the pressure regulation nut (9) of main body (8) upper end, is screwed onto main body (8) lower end, on main body (8) interior edge
Its axial direction offers through-hole one (11), its axial direction is provided with through-hole two (12) and pressure through-hole (3), through-hole in pedestal (10)
One (11) and through-hole two (12) form the cavity, and the upper surface of the cavity is the inner face of pressure regulation nut (9).
3. a kind of infrared ray pressure switch according to claim 2, it is characterised in that: the lower end of the push rod (1)
(15) wall surface of the hole of lateral surface and through-hole two (12) is tightly connected by sealing ring (13).
4. a kind of infrared ray pressure switch according to claim 3, it is characterised in that: the lower end of the push rod (1)
(15) annular groove is provided on, sealing ring (13) is arranged in a ring groove.
5. a kind of infrared ray pressure switch according to claim 2, it is characterised in that: the aperture of the pressure through-hole (3)
Less than the aperture of through-hole two (12), positioning step is formed between pressure through-hole (3) and through-hole two (12).
6. a kind of infrared ray pressure switch according to claim 2, it is characterised in that: be arranged on the push rod (1) limited
The limiting device that push rod (1) processed circumferentially rotates.
7. a kind of infrared ray pressure switch according to claim 6, it is characterised in that: the limiting device is push rod (1)
Upper end (14) cross section be in polygon or ellipsoidal structure, through-hole one (11) be and push rod (1) upper end (14) tie
The compatible polygonal hole of structure or slotted eye；
Or the limiting device is the more than one limit raised line being arranged on push rod (1) lateral wall, limits raised line along push rod
(1) axial setting, is provided with limiting slot on main body (8), and the limit raised line is arranged in limiting slot and can be along limiting slot
Lower reciprocating movement.
8. a kind of infrared ray pressure switch according to claim 2, it is characterised in that: the upper end end face of the push rod (1)
On be provided with positioning column one (16), be provided on the inner face of the pressure regulation nut (9) corresponding with positioning column one (16) position
Positioning column two (17), the both ends of reset spring (2) are respectively sleeved on positioning column one (16) and positioning column two (17).
9. a kind of infrared ray pressure switch according to claim 2, it is characterised in that: set on the side wall of the main body (8)
It is equipped with the mounting groove (18) being connected to cavity, the U-shaped seat (19) of opening inwardly, the infrared ray hair are inserted in mounting groove (18)
Emitter (5) device and infrared receiver (6) are separately positioned on two inner sidewalls of U-shaped seat (19), at the notch of mounting groove (18)
It is arranged fluted (20), described control unit (7) setting is in groove (20).
10. a kind of infrared ray pressure switch according to claim 9, it is characterised in that: setting in the mounting groove (18)
Have positioning baffle (21), positioning baffle (21) is located between the two sidewalls of U-shaped seat (19), and the lateral surface of positioning baffle (21) with
The inner wall of U-shaped seat (19) is inconsistent.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166504.7U CN209120157U (en) | 2018-12-21 | 2018-12-21 | A kind of infrared ray pressure switch |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201822166504.7U CN209120157U (en) | 2018-12-21 | 2018-12-21 | A kind of infrared ray pressure switch |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209120157U true CN209120157U (en) | 2019-07-16 |
Family
ID=67208518
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201822166504.7U Active CN209120157U (en) | 2018-12-21 | 2018-12-21 | A kind of infrared ray pressure switch |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209120157U (en) |
-
2018
- 2018-12-21 CN CN201822166504.7U patent/CN209120157U/en active Active
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